Question

solve the foll equation x-2y=-2;x+2y=10

Answer 1

Answer:

x=6

y=2

Step-by-step explanation:

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x-2y=2.................(1)

x+2y=10.................(2)

Subtract equation (2) from equation (1)

We get,

-4y=-8

y=2. ..................[Substitute value in equation (1)

hence,

x-(2×2)=2

x-4=2

x=6

Answer 2

x-2y= -2. ( :.equation :- I)

x+2y= 10. (equa..II )

now,in. equation ( I ) ,

x-2y= -2

x= 2y-2.

now put the value of x in equation ( II )

x+2y= 10

(2y-2)+2y=10

4y = 10+2

4y = 12

y= 12/4

=> y=3

now the value of y put in any equation

let in equation I

x-2y=-2

x-6=-2

x=4

so the value of x= 4 and y= 3